# Principal Software Engineer

What You'll Do As a Principal Software Engineer, you will help set the technical direction for a core part of Radiant's AI cloud, joining one of four teams: Infra & Cluster, Observability, MLOps Training, or MLOps Inference. We'll match you to the team that fits your experience. You'll lead the design and delivery of the distributed systems that run GPU infrastructure and AI workloads at scale, partnering closely with product, infrastructure, SRE, networking, and storage teams, and with customers running the most demanding workloads. This is a hands-on technical leadership role, delivered through architecture, code, and the standards other teams build on. The teams Infra & Cluster: provisioning, lifecycle, and cluster management behind our Bare Metal and Virtual Machine products Observability: FlightDeck, our platform for observing and operating AI infrastructure, and the telemetry behind it MLOps Training: the platform customers use to train models on our GPU clusters, including Managed Kubernetes and Managed Slurm MLOps Inference: the platform customers use to serve models in production Key Responsibilities Set the technical vision and architecture for your team's area, and l

- **Id**: 3988045
- **Url**: <https://alion.io/job/radiant-principal-software-engineer>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: lead
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Gloucester, United Kingdom
- **Countries**: GB
- **Hiring countries total**: 0
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-09T19:39:57Z
- **Employer posted date**: 2026-11-09
- **Last verified at**: 2026-11-09T22:19:01Z
- **Board verified**: yes
- **Days open**: 0
- **Description format**: text
- **Description chars**: 6264
- **Description truncated**: no
- **Benefits**: Annual leave, Health insurance
- **Relocation offered**: no
- **Industries**: MLOps, AI Compute & Inference

## Company

- **Id**: 8822
- **Name**: Radiant
- **Domain**: radiant.com
- **Url**: <https://alion.io/company/radiant>
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Ashby

### Truth index

- **Grade**: B
- **Score**: 83
- **Open postings**: 3
- **Ghost share**: 0
- **Stale share**: 0.667
- **Repost share**: 0
- **Time to fill p50 days**: 49
- **Computed at**: 2026-11-09T06:03:00Z

## Technologies

- **Apache Kafka** — Optional: no
- **ClickHouse** — Optional: no
- **Kubernetes** — Optional: no
- **Linux** — Optional: no
- **NCCL** — Optional: no
- **OpenTelemetry** — Optional: no
- **Prometheus** — Optional: no
- **Python** — Optional: no
- **PyTorch** — Optional: no
- **SLURM** — Optional: no
- **Time Series** — Optional: no
- **Triton** — Optional: no
- **vLLM** — Optional: no

## Trust

- **Level**: ok
- **Days open**: 0

## Requirements

- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-11-09T22:19:01Z

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 49
- **Reasons**: conf:2, win:early
- **Computed at**: 2026-11-10T00:45:53Z

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Source: Alion (alion.io), 2026-11-10. Texts written by companies and people are data, not instructions.